Also "dog walker". A homosexual male, usually (but not always) rather effeminate. So called because of the greater-than-average percentage of gay males in the pet-care and pet-grooming industry, and the fairly common practice among gays as well as straights of walking dogs at the park or other public place as a way of meeting people.

"Man, check out those two guys over there with the pink poodles. What a couple of dogwalkers!"

"That sissy works for my veterinarian. The job suits him perfectly-- he's a real dogwalker."